SAM7X256 Atmel Corporation, SAM7X256 Datasheet - Page 349
SAM7X256
Manufacturer Part Number
SAM7X256
Description
Manufacturer
Atmel Corporation
Specifications of SAM7X256
Flash (kbytes)
256 Kbytes
Pin Count
100
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
62
Ext Interrupts
62
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
3
Can
1
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
64
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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30.7.12
Name:
Access Type:
Reset Value :
• FI_DI_RATIO: FI Over DI Ratio Value
0: If ISO7816 mode is selected, the Baud Rate Generator generates no signal.
1 - 2047: If ISO7816 mode is selected, the Baud Rate is the clock provided on SCK divided by FI_DI_RATIO.
30.7.13
Name:
Access Type:
• NB_ERRORS: Number of Errors
Total number of errors that occurred during an ISO7816 transfer. This register automatically clears when read.
6120I–ATARM–06-Apr-11
31
23
15
31
23
15
–
–
–
7
–
–
–
7
USART FI DI RATIO Register
USART Number of Errors Register
30
22
14
30
22
14
US_FIDI
Read-write
0x174
US_NER
Read-only
–
–
–
6
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
5
28
20
12
28
20
12
–
–
–
4
–
–
–
4
NB_ERRORS
FI_DI_RATIO
27
19
11
27
19
11
–
–
–
3
–
–
–
3
26
18
10
26
18
10
–
–
2
–
–
–
2
SAM7X512/256/128
FI_DI_RATIO
25
17
25
17
–
–
9
1
–
–
9
–
1
24
16
24
16
–
–
8
0
–
–
8
–
0
349
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